Palm cake and fiber, lignocellulosic wastes, were treated with high-pressure steam at 200 degrees C for 10 min and exploded. After treatment, the contents of the water extractable hemicellulose fraction and methanol extractable lignin increased. Maximal degrees of saccharification were achieved at 53% for steam exploded palm cake using Meicelase P-1, and 98% for steam exploded fiber using Cellulosin AC.